Device for finishing the necks of bottles



(No Model.)

I J. PINERTY & I. A. MOORE.

DEVICE FOR FINISHING THE NEGKS 0F BOTTLES- N0.'395,220. I Patented Dec. 25, 1888.

Jon/v. HNERTY.

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N. FEI'ERS. FhcIwl-iihngnphur. Washingmn D C UNITED STATES PATENT Orricn.

JOHN FINERTY AND FRANCIS A. MOORE, OF PITTSBURG, PENNSYLVANIA.

DEVICE FOR FINISHING THE NECKS OF BOTTLES.

SPECIFICATION forming part of Letters Patent No. 395,220, dated December 25, 1 888.

Application filed December 23, 1887. Serial No. 258,821. (No model.)

To all whom it 71mg concern.-

Be it known that we, JOHN FINERTY and FRANCIS A. MOORE, citizens of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improve ments in Devices for Finishing the Necks of 3ottles; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain new and useful improvement-s in devices for shaping the necks of bottles, the object being to provide a means whereby the neck of an unfinished bottle may be quickly and economically formed, and at the same time rendered perfectly true and regular in contour. To effect this object we have devised the construction illustrated in the accompanying drawings, whercin- Figure 1 is a front elevation of our improved shaping device. Fig. 2 is a side elevation of the same, partly in section. Fig. 3 is a front elevation of a modification of our invention, partly in section; and Fig. +1 a top view of the same.

Similar letters of reference indicate similar parts throughout the scvcu'al views.

1 is a mandrel the outer end of which, 2, is formed tapering, as shown, and provided with a flange or shoulder, 1+, and is designed to admit of entry into the neck of the bottle to be operated upon for the purpose of lin ishing the interior of said neck. 'The n1andrel is secured to a stem, 15, surrounded by a sleeve, 3, within which it isadapted to slide freely in the direction of its length, and is seated upon a spring, I, which normally maintains the mandrel in its outermost position, as indicated by full lines in Fig. 1. The sleeve 3 is slotted for the reception of the screw-stud 5, to limit the movement of the mandrel, and is formed at its other end so as to be capable of attachment to a rotatable shaft. The lovers 6, provided at their outer ends with forming-jaws '7, are pivoted near their middle portion to lugs formed upon a collar, 8, adj ustably fixed upon the mandrelstem 15, and at their opposite ends are connected, through the intermediacy of the pivoted links 9, with a collar, 10, adj ustably fixed upon the sleeve 3. The collars 8 and 10, respectively, are secured in position by means of set-screws 11 and 12, and are capable of being adjusted to conform with the configuration desired to be given to the neck of the bottle.

The configuration imparted to the neck of the bottle will be dependent in the main upon the shape of the forming-jaws. In the form illustrated in Figs. 1 and 2 the jaws are adapted to produce a neck of the shape ordinarily given prescription bottlesthat is, having a small annular flange or bead at the bottle-mouth. In the form illustrated in Figs. 3 and 4: the forming-jaws are adapted to produce abottle-neck of, the shape usually given to beer-bottles. In this latter form of our device -we make use, moreover, of the auxiliary jaws 13, of like contour to the pivoted jaws and fixedly connected to the tapering inandrel 1, the function of these auxiliary j aws being to prevent the glass in its soft and plastic condition from escaping laterally when the pivoted jaws are closed upon it.

The parts being constructed and arranged as described, the operation of our invention is as Follows: Rotary motion being imparted to the device by connecting the stem of the sleeve 3 to a rotating lathe-shaft, or the like, the neck of the bottle to be shaped, while it is in a heated condition, is thrust upon the tapering mandrel 2 until it abuts against the flange 14, the bottle being held stationary by the operator by the means of a snap or otherwise. A further movement of the bottle in the same direction will now cause the mandrel 1 to be forced farther into the sleeve 3, 9o

compressing the spring 4, and gradually bringing the forming-jaws 7 and intermediate parts into the position indicated by dotted lines in Fig. 1, at which point the limit of movement in that direction will have been reached, and as the forming-jaws and man drel revolve they will impart the desired shape to the neck of the bottle. On relief of the pressure and the withdrawal of the bottle from the embrace of the forming-jaws, the parts will be forced back again into their original position by the spring 4, ready for operation upon a second bottle.

As above stated, it is evident that the form of the neck will be dependent upon the shape m plished within certain limits by adjusting the collars 8 and 10 by means of the set-screws 11 and 12, respectively. For instance, a movement of the collar 8 away from the collar 10 would allow the forming-jaws 7 to project that much fartherbeyond the flange 14: of the tapering mandrel 2, thus having the effect of making the lip at the mouth of the bottle relatively thicker, as will be readily understood.

It is evident that instead of having the sleeve stationary and the stem of the mandrel movable, the mandrel may be stationary and the sleeve movable with respect thereto, in which event the mandrel-stem could project entirely through the sleeve 3, and the inner end of said stem rest upon a spring connected to a collar fixed to the mandrel, the outer end of the sleeve extending as far as the position occupied in Figs. 1 and 2 by the flange of the mandrel. In this instance, the neck of the bottle being pressed upon the outer end of sleeve would force the sleeve inward, thereby bringing the forming-jaws together, as before described.

Having thus described our invention, what we claim, and desire to secure by Letters Patent, is

1. A device for forming the necks of bottles, consisting of forming-jaws, a mandrel, and a sleeve, said mandrel and sleeve being longitudinally movable and spring-seated with re spect to each other, the longitiulinally-movable one being pivotally connected to the forming-jaws and having an abutment against which the bottle-neck may be pressed,whereby the act of pressing the bottle-neck against said abutment will cause the forming-jaws to automatically close upon said neck and to be released when the pressure is removed, substantially as described.

2. Adevice for forming the necksot bottles,

consisting of a rotatable stem, a. mandrel spring-seated with respect to said stem and having an abutment for the bottle-neck to bear against, and formingjaws pivoted to the mandrel and flexibly connected to the rotatable stem, substantially as and for the purposes described.

A device for forming the necks of bottles, consisting of a mandrel, a sleeve, a spring interposed between the mandrel and sleeve, a collar connected to the mandrel, forming-jaws pivoted to said mandrel, a collar connected to the sleeve, and'flexible connections between said latter collar and the pivoted formingjaws, substantially as described.

4. In a device for shaping the necks of bottles, the combination, with the pivoted forming-jaws and mandrel, of the auxiliary lateral forming-jaws located between and cooperating with the pivoted jaws, substantially as described.

5. In a device for forming the necks of bottles, the combination, with the mandrel and sleeve spring-seated with respect to each other, of the pivoted forrningjaws, and the collars for connecti n g said jaws with the man drel and sleeve, said collars being adjustable upon said mandrel and sleeve, substantially as described.

6. In a device for forming the necks of bottles, the combination, with the mandrel provided with a projection, 5, of a sleeve having a slot within which said projection is adapted to play, a spring, 4, intermediate between the sleeve and mandrel, collars S 10, fixed, respectively, to the sleeve and mandrel, forming-jaws 7, pivoted to the sleeve 8, and links 0, connecting the inner ends of said pivoted forming-jaws with the collar 10, substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

JOHN FINERTY. FRANCIS A. MOORE.

Vitnesses:

D. E. DAvIs, JOHN ScHUETz. 

